Steam-generator.



Patented Sept l8, won. a. F. a. DES VIGNES & w. A. cLoun.

' STEAM GENERATOR.

(Application filed .Apr. 80, 1900.)

4 Sheets-Sheet l (No Model.)

No. 658,246. Patented Sept. [8, I900. a. F. a. mas mamas & w. A. CLOUD.

STEAM GENERATOR.

(Application filed Apr. 30, 1900.) (No Model.) 4 Sheets-.Sheet 2.

No. 658,246. Patented Sept. l8, I900. s. F. a. mas VIGNES & w. AhnLounb STEAM GENERATOR.

. (Application filed Apr. 30, .1 9O0.) Modem 4 Sheets-Shea! 3.

STEAM GENERATOR. (Application filed Apr. 30, 1900.)

4 Sheets-Sheet 4.

ma NORRIS PETERS co, PHOTO-LUNG wAsr-cmsrou, u. c.

(No Model.)

. \.L a H I 1 n r r V l 4 A v a I 4 m K 5 I u u W I m w I I h n u n A v I r n t I 7 5144714747 I 4 I x r...

UNITED STATES PATENT OFFICE.

GEORGE FRANCIS GABRIEL DES VIGNES AND WALTER AMELIUS OLOUI), OF LONDON, ENGLAND.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 658,246, dated September 18, 1900. Application filed April 30, 1900. semi No. 15,002. (No model.)

To all whom it may concern: among the water-tubes on their way to the Be it known that we, GEORGE FRANCIS GA- uptake. The upper one of the tube-boxes is BRIEL DEs VIGNEs, mechanical engineer, reat the ends pivotally supported upon hollow sidingatZofianyHouse,Strand-on-the-Green," trunnions mounted with capability of turn- 5 Chiswick, London, and WALTER AMELIUS ingin bearings carried ,forexample,bybrack- CLOUD,engineer, residing at Olaremont Villa, et-s from the steam and water chamber. When Harvard road, Gunnersbury, London, in the the tubes are required as a water heater or county of Middlesex, England, subjects of the economizer, one of these trunnions is by a Queen of Great Britain, have invented cergland or other suitable means coupled with IO tain new and useful Improvements in or Oonthe water-space of the steam and water chamnected with Steam-Generators, of which the her, and the other trunnion is similarly coufollowing is a specification. pled with the pipe leading from the force- 'lhis invention relates to improvements in pump of the feed, and the two water-tube or connected with smoke-tube steam-generboxes are at suitabde intervals furnished with t5 ators, and has for its object to more fully partitions or baii'le-plates, which compel the utilize the heat of the products of combustion feed-water which is forced in to one end of the from the furnace by the employment at each upper tube-box to travel in a more or less cirside of the generatorof a group of water-tubes cuitous or zigzag path through the group of mounted with capability of being turned in tubes to the opposite end of the upper tube- 2o hearings to admit of access being had to the box, whence it passes into the water-space of smoke-tubes and which group of water-tubes the steam and water chamber. In this case may be arranged as a water heater or econothe lower tube-box is not connected with any mizer or may be placed in the water circulaportion of the generator; but if the group'of tion of the generator. tubes is arranged in the water circulation of 25 In carrying the invention into efiect a steam the generator both the ends of the upper tubeand water chamber, preferably cylindrical inbox are connected with the steam and water shape, is placed over the furnace and inclosed chamber by pipes and glands or 'other suitby a shell or casing, so as to leave a space all able means and the ends of the lower tubearound the same, and this shell or casing is box are connected with the bottom of the 30 at its upper part provided with an outlet for smoke-tube boxes, thereby inducinga perfect the smoke and products of combustion. Procirculation of the water in the boiler. I jecting downwardly from the steam and water When access is desired to the smoke-tubes, chamber and laterally diverging from each a door or cover is removed from'an opening other are two rows of sectional tube-boxes or in the shell or casing at least coextensive with 35 elements, or instead of being sectional each the group of water-tubes, when the entire set of boxes might be in one continuous group of water-tubes may be turned on its length, and the furnace occupiesa position betrunnions out of the way. tween these depending elements. The tubevWhen the group of tubes is arranged in the 7 boxes or elements, which'may be rectangular water circulation of the generator, it is neco 40 in cross-section, are intersected by transverse essary to disconnect the lower water-tube box smoke-tubes, and the smoke and products of from the bottom boxes or smoke-tube box'becombustion from the furnace pass through the fore turning the group of tubes on its truntube's into a smoke box or space between the nions. shell or casing and the tube-boxes. In this In order that the said invention may be 45 smoke-box is arranged a flattened group or more clearly understood and readily carried groups of water-tubes, which at their ends into effect, we will proceed, aided by the acare fixed with and open into longitudinal companying drawings, more fully to describe tube-boxes which connect the various tubes, the same. and the smoke and products of combustion I In the drawings,Figure1is an end elevation, Ice 50 from the furnace after passing through the partly in section, of a steam-generator fitted smoke-tubes of the elements pass around and with a water heater or economizer according to the present invention. Fig. 2 is a side elevation thereof with part of the casing broken away. Fig. 3'is a sectional elevation of an economizer separately. Fig. 4 is a sectional plan or top view thereof. Fig. 5 is a sectional end viewthereof. Fig. 6 is an end elevation, partly in section, of a steam-generator fitted with a group of water-tubes according to the present invention. Fig. 7 is a sectional elevation of a group of water-tubes separately, and Fig, 8 is a longitudinal section of parts.

In the several figures like parts are indicated by similar letters of reference.

Referring to Figs. 1 to 5, (t represents the furnace or combustionchamber, and b represents a steam or water chamber, preferably cylindrical in shape, which is placed over the furnace Ct, and 0 represents a shell or casing which iucloses the same, but so as to leave a space or flue a. all around, and this shell or casing c is at its upper part provided with an outlet 0 for the smoke and products of com: bustion.

Projecting downwardly from the steam and water chamber 19 and laterally diverging from each other are two rows of sectional tube-boxes or elements I), or instead of being sectional each set of tube-boxes I) might be in one continuous length, and the furnace a occupies a position between these depending elements.

The tube-boxes or elements, which may be rectangular in cross-section, are intersected by transverse smoke-tubes b and the smoke and products of combustion from the furnace a pass through the tubes 19 into the smoke box or flue a between the shell or casing c and the tube-boxes or elements Z).

In the smoke box or flue a at each side of the generator is arranged a flattened group of water-tubes d, which at their ends are fixed with and open into longitudinal tube-b0xes d, which connect the various tubes (Z, and the smoke and products of combustion from the turn ace a after passing through the smoketubes b of the elements I) pass around and among the water-tubes d on their way to the uptake 0.

The upper one of the tube-boxes d is at its ends pivotally supported upon hollow trunnions (1 mounted with capability of turning in bearings 0 carried by the casing c, or it might be by brackets, from the steam and water chamber b, and the hollow trunnions 61 pass through the bearings c to the outside of the casing c. a stufling-box d and pipe 01 coupled with the water-space of the steam and water chamber b, and the other trunnion d is similarly coupled with a pipe (1 leading from the forcepump of the feed.

The two water-tube boxes at are at suitable intervals furnished with partitions or baffleplates d, which compel the feed-water which is forced into one end of the upper tube-box d to travel in a more or less circuitous or zigzag path through the group of tubes 61 to the opposite end of the upper tube-box cl,whence One of the trunnions d is by it passes into the water-space of the steam and water chamber 11, and in this case the lower tube-box cl is not connected with any portion of the generator, but rests against and is removably bolted to a bracket 0 from the casing c.

When access is desired to the smoke-tubes W, a door or cover 0, covering an opening provided in the shell or casing, c, at least coextensive with the group of water-tubes d, is removed, when the entire group of water-tubes d may, afterdisconnecting it from the bracket 0 be turned on its trunnions (1 out of the way, as indicated by the dotted lines in Fig. 1.

It will be understood that an economizer may be arranged on each side of the generator, in which case a separate feed maybe arranged in connection with each group of tubes, or the feed-water would be introduced into one group and conveyed by a pipe to and passed through the other on its way to the steam and water chamber 1).

In the example given at Figs. 6 to 8 a fiattened group of water-tubes d is mounted upon hollow trunnions d in a similar manner to that hereinbefore shown and described with respect to the previous figures; but in this case the device is placed in the water circulation of the generator. For this purpose the hollow trunnions d at both ends of the upper tube-box d are connected with the steam (or it might be the water) space of the steam and water chamber 1) by means of stuffingboxes (Z and pipes d, and the ends of the lower tube-box d are connected with the lower part of the water-space of the smoketube boxes I) by pipes (1 carried by the tube box (1, and unions 1), coupling them with similar pipes 12 carried by the tube-box (7, thereby inducing a perfect circulation of the water in the generator. According to this arrangement when access is desired to the smoke-tubes b the pipes (Z and b are disconnected at the unions I), the door c in the casing c is opened, and the group of watertubes d is swung outward on the trunnions (Z as described with respect to the previous arrangement. In the smoke box or flue a is or may be placed a steam-superheater consisting of a group of tubes e, opening into tube-boxes 6, one of which is by a pipe 6 connected with the upper part of the steam and water chamber 1) and the other of which is fitted with a steam-supply pipe 6 The feed-water may be introduced into the waterspace at the lower part of the smoke-tube boxes I) or into the lower part of the steam and water chamber b, as may be found convenient.

By the means hereinbefore described the products of combustion from the furnace a after passing through the smoke-tubes b on their way to the uptake in addition to acting upon the steam and water chamber 1) also give up part oftheir heat to the group of tubes (I, while by reason of the peculiar construction of the latter access may readily be chtained to the sm oke-tubes for cleaning or other purposes.

What we c1aimis l. A steam-generator comprising a steam and water chamber, depending divergent members or elements, transversely-intersecting smoke-tubes, a furnace located beneath and between said depending members, a casing surrounding the generator and furnace and leaving a smoke box or flue around the same, a flattened group of water-tubes located in said line at each side of the generator, said group being mounted upon hollow trunnions so that it may be turned on said trunnions in order to give access to the smoke tubes and communicating with the steam and water chamber, whereby the said group may constitute a part of the circulating system of the generator or a feed-water heater in said system, substantially as described.

2. A steam-generator comprising a steam and water chamber, and depending divergent members or elements, transversely-intersecting smoke-tubes, a furnace located beneath and between said members, a casing surrounding the generator and furnace and leaving a smoke box or line around the same, a flattened group of water-tubes located in said flue, tube-boxes connecting the ends of said tubes the upper one of which is 'provided with hollow trunnions mounted in suitable bearings, and a pipe leading from the feed-water supply to one of the tube-boxes, and another pipe leading from the other tubebox to the steam and water chamber, substantially as described.

3. A steam-generator comprising a steam and water chamber, and depending divergent members or elements, transversely-intersectiug smoke-tubes, a furnace located beneath and between said members, a casing surrounding the generator and furnace and leaving a smoke box or flue around the same, a flattened group of water-tubes located in said flue, tube-boxes connecting the ends of said tubes, the upper one of which is provided with hollow trunnions mounted in suitable bearings, and a pipe leading from the feed-water supply to one of the tube-boxes, and another pipe leading from the other tubebox to the steam and water chamber, and partitions in said tube-boxes arranged to cause the feed-water to travel a circuitous path therethrough, substantially as described.

4. A steam-generator comprising a steam and water chamber, depending divergent members or elements, transversely-intersecting smoke-tubes, a furnace located beneath and between said depending members, a casing surrounding the generator and furnace and leaving a smoke box or flue around the same, a group of water-tubes located in said flue at each side of the generator, said group being mounted upon hollow trunnions so that it may be turned on said trunnions in order to give access to the smoke-tubes and communicating with the steam and water chamber, whereby the said group may constitute a part of the circulating system of the generator or a feed-water heater in said system, substantially as described.

5. A steam-generator comprising a steam and water chamber, and depending divergent members or elements, transversely-intersecting smoke-tubes, a furnace located beneath and between said members, a casing surrounding the generator and furnace and leaving a smoke box or flue around the same, a group of water-tubes located in said flue, and tubeboxes connecting the ,tubes at their ends, hollow trunnions on the upper tubebox mounted in bearings, and pipes conmeeting the upper tube-box with the steam and water chamber, and detachable connections between the lower tube-box and the lower part of the Water-space of said depending members, substantially as described.

6. In a steam-generator, the combination with a steam and water chamber, of a group of water-tubes located in the tubes or flues for the products of combustion, and hollow trunnions on said group mounted in suitable bearings, whereby said group of tubes may be swung out of the way, in order to give access to said smoke flues or tubes, substantially as described.

GEORGE FRANCIS GABRIEL DES VIGNES. WALTER AlllEhlUS CLOUD.

Witnesses:

GEO. S. VAUGHAN, W. M. HARRIS. 

